It's laziness. Some go and collect a lot of quotes and put them together and never attempt to determine whose opinion is driven by fact and knowledge.
I even found a company that provided streaming video to sites operated by minors, on condition that its president be allowed to watch the pornographic performances for free.
Like most people, I gave little thought during my life to the scourge of child pornography. But, I now know we are fighting a losing battle. The predators are sophisticated in the use of computers and talented in the manipulation of children.